參考文章：
Using top to Monitor Server Performance
How to Optimize MySQL Performance Using MySQLTuner
Why is my Linode suddenly using 100% of its CPU?
診斷CUP
top -bn 1 -o %CPU | head -n 15
診斷RAM
top -bn 1 -o %MEM | head -n 15參考文章：
Using top to Monitor Server Performance
How to Optimize MySQL Performance Using MySQLTuner
Why is my Linode suddenly using 100% of its CPU?
top -bn 1 -o %CPU | head -n 15
top -bn 1 -o %MEM | head -n 15